chore(error): added index.js for easier imports

Author: fourcolverleaf

src/structures/errors/index.ts

@@ -0,0 +1,7 @@
+export {
+  DiscordHttpsError,
+  DiscordHttpsTypeError,
+  DiscordHttpsRangeError,
+} from "./DiscordHttpsError.js";
+export { DiscordHttpsErrorCodes } from "./ErrorCode.js";
+export { Messages } from "./ErrorMessage.js";